Cement mold.



H. H. STYLL .& H. K. PARSONS.

CEMENT MOLD.

APPLICATION FILED MAR. 21, 1915.

Patented Feb. 1, 1916.

Flga

WITNESSES. I I INVE/VTUBS fiww Harry H cSfyZZ Harold Parsons HrromvnsHARRY H. STYLL AND HAROLD K. PARSONS, or SOUTHBRIDGE, MASSACHUSETTS,

ASSIGNORS To AMERICAN OPTICAL COMPANY, OF SOUTHBRIDGE, MASSACHU- SETTS,A VOLUNTARY ASSOCIATION.

CEMENT 1 MOLD.

United States, residing at Southbridge, in the county of Worcester andState of Massachusetts, have invented certain new and usefulImprovements in Cement Molds, of which the following is a specification.

This invention relates to cement molds, and more particularly to a newand novel article of manufacture which is adapted for use by opticiansand other persons for cementing the straps of eyeglasses to the lenses.

The primary object of the invention is to provide a mold which can bemanufactured and placed on the market in a condition for ready use, andto so construct the mold as to render the same adaptable to mountings ofvarious design.

Another object is to provide an article of this character which .willgreatly reduce the cost of repairing cement mountings, and which willmaterially decrease the time and labor incident to such repair.

With these and other objects in view, the

invention consists in the novel features of construction, combinationand arrangement of parts, as will be hereinafter more fully described,illustrated in the accompanying drawings, and claimed.

In the drawings: Figure I is a vertical sectional view of a moldconstructed in accordance with the invention and Showing the same inposition for use between the lens strap and the lens. Fig. II is ahorizontal section on the line IIII of Fig. I. Fig. III is a detailperspective view of the mold. Fig. IV is a horizontal sectional viewillustrating a slightly modified form of mold. Fig. V is a horizontalsectional view illustrating a still further modified form of mold. Fig.VI is a horizontal sectional view showing a still further modified formof mold. Fig. VII is a similar view showing still another modified formof mold. Fig. VIII illustrates still another modified form of mold. Fig.IX is an edge view illustrating the manner in which the mold may beconstructed in strip form. Fig. X is a plan view illustrating one formin which Specification of Letters Patent.

' which is adapted. to be the mold are to be made nature that dampeningPatentedneb. 1, 1916.

Application filed March 27, 1915. Serial No. 17,397.

the strips may be sold. Fig. XI illustrates a still further modifiedform of mold. Fig. XIIis a horizontal sectional view illustrating stillanother modifiedform of mold.

Referring to the drawings by numerals, 1 designates the lens, and 2 alens strap secured thereto by adhesive substance, Such as cement or the1 The present invention aims to provide a mold formed from cement or anyother desirable material of a size and shape to be snugly receivedbetweenthe ears of a clip so that the same may be positioned therein andslightly heated and then applied to the lens to firmlysecure the lens tothe strap,

or may be applied ina variety of other ways.

This mold comprlses a rear portion 3 for engagement with the edge of thestrap and side portions 4 for engagement with the ears of the Strap, theinner faces of the said side and rear portions being adapted forengagement with the sides .and edges of the lens.

It is to be understood that the sides 4 of to fit the shapes ofdifferent designed lens clips, also that the material from which themold is constructed is to be made in various thicknesses and fromvarious materials, and that the rear portions 3 may be, concave orconvex and tapered longitudinally or straight, as desired, the ultimatepurpose of the invention residlng in the provision of a mold of thischaracter which will greatly facilitate the'operation of applying a lensvto a strap.

It is desired to have it further understood that the mold piece may bemade of a material which is adapted to be heatedslightly after beingapplied to the strap so as to condition the same for securing a lens tothe strap, or that the material may be of such a will adapt the same tothe requirement of its use.

We do not wish to limit ourselves to either of the particular methods ofapplying the mold set forth, as it will be obvious that such' operationmay be accomplished in a variety of other ways.

- In Fig. IV, we have shown a slightly modified form of mold, and strap,in which of different shapes the edges of the strap are turned inwardlyat 5 to provide a pocket in which the mold, is adapted to be placed.From this construction it will be seen that it is not absolutelynecessary to fasten the mold to .the strap as the edges 5 will preventits disengagement therefrom. To apply the lens to this form of strap, itis only necessary to either slightly heat the lens or the mold, placethe lens within the mold, and press the sides of the strap inwardly toforce the mold into engagement with the lens. If desired, the mold maybe made slightly resilient in order that the same may be sprung betweenthe inturned edges 5 so as to obviate any necessity of heating orotherwise treating the mold before it is placed in the strap.

In Fig. V, we have illustrated a mold having laterally extending lugs 6formed on either side thereof for engagement with the screw holes of thelens clip when the mold is used for applying a lens to an ordinary screwform of mounting. In this construction the exterior of the mold may befastened to the interior of the strap or may be secured therein simplyby reason of the engagement of the lug 6 with the screw hole,

as desired, the lens being adapted to be placed within the mold andsecured therein in the ordinary manner.

In Fig. VI, we have illustrated a mold in which the exterior thereof isformed from a cement or adhesive which is slow drying and Which isadapted to be initially placed in the strap and secured therein, thestrap and mold being adapted to be sold as an article of manufacture.The interior of this mold is formed from a suitable material which willreadily adhere to glass and will require but slight heating or dampeningin order to condition the same for the application of the lens therein.The two materials from which this moldis constructed may be securedtogether in any preferred manner, as by forming the interior portionfrom a granular material, and the exterior portion from a soft solder,which two substances will readily adhere together.

In Fig. VII we have illustrated a further modification of the mold inwhich the exterior adhesive is separated from the interior adhesive bymeans of a heat insulating material, such as an asbestos composition orthe like, the moldbeing adapted to be first secured within the strap andthe lens then applied thereto, the insulating material 7 preventingdiscoloration of the strap when heat is applied to the interior of themold, as will be obvious.

In Fig. VIII, we have shown a structure very similar to the constructionshown in Fig. VI but differing therefrom by reason of the provision ofthe teats 8 upon the exterior face of the interior lens engagingsubstance so as to more firmly connect the soft solder thereto andprevent any likelihood of the two substances becoming disengaged onefrom the other.

In Figs. IX. and X, we have shown the mold as being constructed in stripform and as being suitably cut or stamped so as to require a minimum oflabor on the part of the optician or other person who applies the moldto obtain a mold of the correct size and shape to fit the particularmounting to which it is adapted to be secured, the dotted linesillustrating some of the Variations in the manner in which the clip maybe cut.

In Fig. XI, we have shown the mold as being provided with oneor morelugs 9 extending. inwardly from the sides thereof for engagement withrecesses 10 formed in the sides of the lens, and one or more lugs 11formed on the inner rear face of the mold for engagement with recessesformed in the edge of the lens.

In Fig. XII the mold is shown as being provided adjacent the outercorners thereof with vertically extending flanges 12 for engagement withrecesses 13 formed in the corners of the strap, the mold and flanges 12being adapted to be heated and forced within the recesses 13 so thatwhen the flanges harden they will prevent accidental disengagement ofthe strap from the mold, the mold being of any construction set forthand being applied to the lens in any desired manner.

From the foregoing description taken in connection with the accompanyingdrawings, it is thought that the construction and operation of thedevice will be clearly understood, and while we have herein shown anddescribed one specific form of our invention, we do not wish to belimited thereto, except to suchlimitations as the claims may import.

We claim:

1. In an ophthalmic mounting, the combination with a strap member in theform of a laterally open box, of a heat actuable adhesive formed on andadhering to the inner face of the strap, whereby heating of the strapwill soften the adhesive to cause 1t to firmly engage and secure a lensas presse into the strap.

2. As an article of manufacture, an eyeglass strap comprising a boxportion adapted to embrace the lens, and a heat actuable adhesive liningcarried by the inner face of the strap, whereby the strap may at anytime be attached to or detached from a lens by simply heating thereof.

3. As an article of manufacture, a mount for an ophthalmic lens,comprising a strap having edge engaging and side engagin portions forcooperating with the lens, an a hardened adhesive adhering to and liningthe strap, whereby heating thereof will soften the same to a conditionto satisfactorily adhere to and secure a lens Within the strap,substantially as and for the purpose described.

4. As an article of manufacture, a mold includingmeans to secure thesame to a strap and a lens, the strap and lens engaging portions of themoldbeing formed from difierent adhesive material.

5. As an article of manufacture, a mold including means to secure thesame to a strap and a lens, the strap and lens engag- In testimonywhereof We aflix our sig- 15 natures in presence of two Witnesses.

HARRY H. STYLL. HAROLD K. PARSONS.

Witnesses:

CARROLL BAILEY, JQSEPH J. DEMERS.

